Sunday, May31, 2020
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Marine Weather and Tides
Emeryville, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:47AMSunset 8:26PM Sunday May 31, 2020 12:19 PM PDT (19:19 UTC) Moonrise 1:45PMMoonset 1:48AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 832 Am Pdt Sun May 31 2020
Today..SW winds 5 to 15 kt. Gusts up to 25 kt this afternoon.
Tonight..SW winds 5 to 15 kt with gusts up to 25 kt.
Mon..SW winds 10 to 20 kt with gusts up to 25 kt.
Mon night..SW winds 5 to 10 kt.
Tue..SW winds 5 to 15 kt.
Tue night..SW winds up to 10 kt.
Wed..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
PZZ500 832 Am Pdt Sun May 31 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will gradually increase over the coastal waters through Monday. A mixed northwest and southwest swell will continue in the coastal waters through much of the week.


7 Day Forecast for Marine Location Near Emeryville, CA
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location: 37.85, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 311752 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1052 AM PDT Sun May 31 2020

SYNOPSIS. Partly to mostly cloudy conditions will persist through Monday with temperatures near to slightly below seasonal averages. A warming and drying trend is forecast for midweek, especially inland. Temperatures turn cooler late in the week with the potential return of unsettled weather conditions by next weekend.

DISCUSSION. as of 8:45 AM PDT Sunday . Moist onshore flow has developed in the wake of the upper low that passed through yesterday. This has allowed low clouds to spread inland this morning. Low clouds will clear out late morning leaving us with high clouds. Highs today will be near to slightly below normal for this time of year.

Another upper level trough is approaching the west coast. This trough will shear apart and form a cutoff low off the southern California coast by Monday night and Tuesday while an upper level ridge over the southwest nudges into Nevada and northern California. The 500 mb heights start to increase over our district tonight which will result in a shallower marine layer. Low clouds will return tonight but will not spread as far inland as this morning and will burn off earlier on Monday morning. Highs Monday will be about 5-8 degrees warmer over the inland areas with a few degrees of warming at the coast. On Tuesday the flow around the cutoff low brings a light east to southeast offshore flow to the area resulting in less low clouds and more daytime warming.

From previous discussion . While a general warming trend is likely to occur over the region from Tuesday into Wednesday, the forecast models diverge greatly with respect to just how hot the air mass aloft will become. The GFS indicates 850 mb temperatures will approach 20 deg C over our region by 00Z Thursday while the ECMWF is closer to 25 deg C. With this said, the official forecast will follow the NBM which leans slightly toward the warmer ECMWF and ensembles. Thus, expect widespread 80s to lower 90s across the interior on Tuesday with lower to middle 90s by Wednesday. Cooler conditions are likely at the coast as the marine layer and onshore flow may persist with periods of night/morning low clouds.

By Thursday and Friday the closed low is projected to push inland over southern California in advance of a deepening mid/upper level trough off of the Pacific Northwest coast. The forecast models do indicate a very slight chance of precipitation over southern and/or central California as the low pushes inland, yet confidence remains low at this time. For now, will maintain dry weather conditions in the forecast as moisture will be limited as this system approaches the coast. Temperatures will also trend cooler beginning Thursday and moreso on Friday as the ridge shifts to the east.

Temperatures are likely to fall back to below seasonal averages by Friday and through the upcoming weekend as a broad trough impacts much of the West Coast. There will be the potential for unsettled weather as well, yet confidence of widspread precipitation remains low across our region at this time. Meanwhile, wet weather will be more likely over northern California and points northward as the trough pushes inland.

AVIATION. As of 10:50 AM PDT Saturday . for 18Z TAFs. Widespread MVFR ceilings will clear in most areas by 19Z. Light westerly winds will increase to moderate by mid afternoon. MVFR ceilings will redevelop at most TAF sites overnight, starting near Monterey Bay early in the evening and developing at most other TAF locations by 10Z. Local IFR ceilings also possible late Sunday night and early Monday.

Vicinity of KSFO . Relatively thick low cloud layer with widespread MVFR ceilings has been slow to clear around SF Bay this morning. Web cams currently show low cloud deck starting to break up so expect VFR conditions by 19Z. Light westerly winds will increase to about 15 kts by mid afternoon and continue into the evening. MVFR ceilings likely to redevelop by about 06Z and continue through 17Z Monday.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . MVFR ceilings early in period forecast to break up by 20Z, but may remain in place through the afternoon. Even if VFR conditions develop this afternoon, expect an early return to MVFR ceilings by around 00Z Sunday evening. IFR ceilings then likely from 06Z to 17Z Monday.

MARINE. As of 8:32 AM PDT Sunday . Northwest winds will gradually increase over the coastal waters through Monday. A mixed northwest and southwest swell will continue in the coastal waters through much of the week.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. NONE.



PUBLIC FORECAST: W Pi AVIATION: Dykema MARINE: Dykema

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 4 mi50 min WSW 5.1 G 7 61°F 1015.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi50 min W 7 G 8.9
OBXC1 4 mi50 min 60°F 57°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi50 min WNW 7 G 8.9 60°F 1015.9 hPa
AAMC1 - 9414750 - Alameda, CA 5 mi50 min WSW 6 G 8.9 62°F 68°F1016 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 6 mi50 min SSW 9.9 G 14 61°F 1016.1 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 7 mi50 min SW 2.9 G 7 61°F 1015 hPa
PXSC1 7 mi50 min 63°F 56°F
RCMC1 - 9414863 - Richmond, CA 8 mi50 min S 6 G 8.9 62°F 64°F1015.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi34 min SE 9.9 60°F 1016 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi50 min 60°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 14 mi50 min WSW 7 G 9.9 64°F 1015.2 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi50 min WNW 11 G 15 65°F 69°F1015 hPa
UPBC1 16 mi50 min WNW 11 G 15
PCOC1 - 9415144 - Port Chicago, CA 19 mi50 min W 12 G 14 65°F 69°F1014.8 hPa
46237 - San Francisco Bar, CA (142) 19 mi50 min 58°F4 ft
RTYC1 - 9414523 - Redwood City, CA 24 mi50 min N 7 G 9.9 63°F 72°F1016.2 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi50 min NW 9.9 G 13 67°F 1014.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi95 min W 8.9
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi30 min W 5.8 G 7.8 54°F 56°F4 ft1016.9 hPa54°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi30 min W 3.9 G 5.8 57°F 55°F5 ft1017.2 hPa55°F

Wind History for Oakland Middle Harbor, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA11 mi27 minW 710.00 miMostly Cloudy67°F53°F61%1016.1 hPa
Concord, Buchanan Field, CA16 mi27 minWNW 410.00 miA Few Clouds70°F52°F53%1013.5 hPa
Hayward, Hayward Air Terminal, CA16 mi26 minW 410.00 miMostly Cloudy66°F52°F61%1016.7 hPa
San Francisco, San Francisco International Airport, CA16 mi24 minWNW 910.00 miMostly Cloudy66°F52°F61%1015.9 hPa
San Carlos Airport, CA22 mi33 minN 610.00 miOvercast64°F53°F68%1016.3 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrS5W13W15W9NW6NW7NW5NW5SW11W4NW11W9NW7W4NW3NW4N5NW7NW9NW7W7W7W8W7
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2 days agoNW13NW13W15W13W14W17NW14
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Tide / Current Tables for Berkeley, California
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Berkeley
Click for Map
Sun -- 02:11 AM PDT     1.87 feet Low Tide
Sun -- 02:47 AM PDT     Moonset
Sun -- 05:48 AM PDT     Sunrise
Sun -- 07:37 AM PDT     4.42 feet High Tide
Sun -- 01:54 PM PDT     0.32 feet Low Tide
Sun -- 02:45 PM PDT     Moonrise
Sun -- 08:25 PM PDT     Sunset
Sun -- 08:50 PM PDT     5.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.21.922.53.23.94.34.443.22.21.20.50.30.61.42.53.74.85.55.65.34.4

Tide / Current Tables for Berkeley Yacht Harbor .9 mi S, San Francisco Bay, California Current
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Berkeley Yacht Harbor .9 mi S
Click for Map
Sun -- 01:51 AM PDT     0.01 knots Slack
Sun -- 02:47 AM PDT     Moonset
Sun -- 05:27 AM PDT     0.22 knots Max Flood
Sun -- 05:48 AM PDT     Sunrise
Sun -- 08:37 AM PDT     -0.00 knots Slack
Sun -- 11:13 AM PDT     -0.33 knots Max Ebb
Sun -- 01:51 PM PDT     0.01 knots Slack
Sun -- 02:45 PM PDT     Moonrise
Sun -- 05:57 PM PDT     0.34 knots Max Flood
Sun -- 08:25 PM PDT     Sunset
Sun -- 09:30 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.100.10.20.20.20.20.1-0.1-0.2-0.3-0.3-0.200.10.20.30.30.30.20.1-0.1-0.3

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (15,3,4,5)
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Ground Weather Radar Station Sacramento, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.